Expanding mill



Oct 4 1 G. J. THUST EXPANDING MILL 1 Filed July 16, 1925 e snts sheiit l ATTORNEYS.

G. ,1. THUST EXPANDING MILL Filed July 16, 1925 may a I 1,644,552 G. J. THUST EXPANDING MILL Oct. 4, 1927.

Filed J l6 1925 e Sheets-Sheet 5 FIG 3 GEORGE J.THU6T INVEVORL Oct. 4, 1927. 1 644552 G.- .J. THUST EXPANDING MILL Filed July 16,1925 6 Sheets-Sheet 4 Oct. 4, 1927. G. J.

' EXPANDING MILL Filed July 16, 1925 e'sneets-sheet 5 i W g f I 2 5 5.. 4 4 1 T sm U M HG Tm mm m m 7 2 9 A" Y .L cv O 6 Sheets Sheet 6 Filed July 16, 1925 Wm @x -W// lf R. I I

ATTORNEYS.

GEORGE J. TH usT Patented Oct. 4, 1 927.

' GEORGE- :r. 'rnus'r, 0F ArrLE'roN, WISCONSIN.

teaser EXPANDING MILL.

Application filed .l'uly 16,1925. Serial no; 44,034.

The invention relates to an apparatus for 4-4 of Flgure '1.

removing mandrels from steel tubes, and more particularly to the class of expanding mills for use in steel tube making. v

The primary object of the invention is the .provision of a mill 'of this character, wherei in the steel seamless tube carrying the mandrel, which is tight therein as received from a reducing mill, is acted upon between superposedplatens, by a rolling operation,,whereby the saidtube is stretched, so that it is freed from said mandrel, the lowermost platen being supported in a novel manner to permit the proper adjustment thereof, while the upper platen is supported and moved inv a unique manner, to render the same prac- ,tically frictionless in its operation.

Another object of the invention is the pro- "vision of a mill of this character, wherein the upper reciprocatory platen is suspended in the frame of said milland guided therein during movement to effect the proper rolling of the tube for the required stretching of,

required stretchingof the steel tube acted,

upon thereby with dispatch.

A still furtherobject of the invention is the provision of a mill of this character,

, which is comparatively simple in its make up,

' possessing but few parts, thoroughly reliable and efficient in its purpose, strong, durable, and inexpensive in manufacture and of in stallationf I With these and other objects in view, the

. invention consists in the features of construc- V In the accompanying drawings:

Figure 1'. is a front elevation of the mill constructed in accordance with the invention.

Figure 2, is a' top plan view thereof. F1gure3, is an end elevation; I

Figure 4;, is a sectional View on the line i Figure 5, is a sectional view on the'line responding parts throughout." the several viewsv i the drawings. v

Referring to the drawings in detail, :A,

designates the bed of the millfwhich. is of the required size to meet the demand of they latter, and has superimposed thereonfthe- C-shaped frame B, having. at its open mouth 10, a lower table 11,- and anfupper crown 12,

these being disposed transversely of thef frame B, and are at the requiredfspaced apart relation to one another, while theltable 11, has formed thereon longitudinally ofthe same spaced parallel raised guideways 13,

for independently adjustable wedges 14:, co-. acting with reversely inclined seats;1'5. formed in the under face of an adjustable sup- .port 16, of a lowerplaten 17 for the mill) On the crown 12, is removably secured an upper plate 18, the same beingfastenedvin place by the bolts 19, while located between this plate. 18, and the lower platen"1 7,"is a movable, platen 20,".thesame being of.,the 5 7 required thickness and dimensions'as may he demanded, and. this platen, isf'actuated in.

a manner hereinafter fully described.

The support 16, andthe lower platen 17,

are held upon'the I table 11, through'i 'ithe medium of'bolts 21, which are passed loosely through the said table and support'and are" threaded into the said lower platen, while projecting laterally from one end I of" the table 11, is a bracket 22, it being fitted with adjusting screws 23, and 24, "respectively, each being tapped into the end next thereto of the adjacent wedgel l, and support 16,

respectively, so that on adjustment of said" screws 23, the wedge acted ,upon can be .moved' on the way 13, therefor to regulate the plane of theqlowerplaten 17, as the occasion may/require. Each screw 23,.and screw 24, carries an adjusting nut 25,, which are adaptedto work against thebracket '22, to lock' the said screws 23, and 24c, in adjusted position, and to hold the wedge", 1ft, ,firm

when regulated. Secured at opposite ends .of' :upper crown 12, are L-shapedtracks 26, each hav- 'ing the forwardly extending .portions' 2' 7 andinnihelaterally projectedtrack flanges 28,.eofrthe' sameslides a hanger 29, bolted at 80,'-to;each end of the movable platen 20, these hangers 29, serving as safety supports *for'thelatterQ 1 7' s' Y Arrangedbetween the movable platen 20, ande-the upper vplate 18 is a bearing t611 =31, halving reduoed 'outer'ends 32,. the lattei'; hav- 7 I i Mith; p m: indglower l toothed acks 34,

{platen 20; respectively, to'holdtheiroll 31; 1'31. its Mpflnrelationwith the uppe'rr plate m i'emnesh "with companion. reek ifo i'med'in m {blockffifi};"depending from fliq'widelifiic e of ihe'platen 20, andth'isblo ck V a iflbs. 8S: a'riiabnment forsthe, s'teeLtdbe 2s: pleded in;t e m 11,,ee es to initially "e {unit betweenqthe lower;;p1aten' '17,

iorfireeinggitiromftheflmfinditel 141,1Within ihe's mem...

,3. I I, 3 haS-V fixed-toque "end a throw dtqitliemlpqk; 39; when the .m e,4; ,1isme ee iltovibe,operated upon by c -thefmill.

htemlly' from :one end iformedvat the meal edge the W1e11 Q platen ".17, 41s :elearly; shown stood th albutmentblock 39,15 f ee, of ;the1mys;ble p1aten; 20, endiis m'oVedinde-I' ,regfof .the {frame ;B,'-is.,a.ibu11- the \1 am 44,Eo which works 7 lipon gnoils 4:5 passed. through suitable 46,}:in the frameflB, endjic onnect #QdsEA-S ,1; being designedfto V reciprocate tmo'va'bl laten Q20, and when :the latter,

lg plished forwardly, it rolls the tube 40, 2 nd mandrel therein, outwardly upon the :hwu e d e biof s d" p n from fithe, min {onto kai {skid or skidstnotshownfi Y ZRivQtxidnt each .end

ingfkeyedhthereto i'eok "gears 33, each mesh Y wl'iichf isl-e'jonrneled fa transyerse shaft 1-37,; 38,

menmovable ,p12 1te1 12O for rolling V. poiionr thenbetween to f stretch .szii ditube 40,

g erQ-,1which ismanually operated to 52mm,

1199140 :withiits. mandre1 41,is inserted i fifithe ,jmill ,1 mm '1 feed i'olleis I), suitably the vseme yetit; may. be moved n- -the ra h ul x h c a inn re-r thelr ea iledgepoflthemomblezplaten L20," 7

,ofMtheifmmeBees at gentmuy l i theirmouth Eportion 10," is Y 21', weighted{ 31111 49," the shOYtQl? end of wlhiclp oni riet'ion 1 ro11ei150; con-" (the; undei jfaee of the rmova ble while .the longer end Elias aidjustjbl- Imounted thei'eon a; weight ,51," and. in 1 this manner: the said mova ble pleten 20, and

Again. With reference to the Wedge 14:,

.these will permit the tilting of the support 16, up or down at either the front or reel ed es thereof to com 361'1S2tt6 for an s irin' '01 yield 111' the frame B,.shouid the same be p present at the outeriedge 47, of the lower ,platen17.

. V s'oj; It is of course to be understood that the r Y movableq platen 20, may "be; r ec ipfocated other than'from powertmnsmitted through j the "m'ediu'mxof the-bulldozer 143,. so f0'1" this, I,

.. the iin ventiton' is not to be restiiioted in: scope in thisrespect- Y The woik'ng sition by asafetyhanger or hangeTsZQ, so

he-his claimedlis 1 I V v feces of the "lower "platen" 17 andthejmovableiplaten 20, are Hat and smooth, and thelatter p1aten..is'he1d i11 poe 1 w 'thdt it.Wi11'IlOt f2t11 downfincaseanythingi 1 .-;should heppen "to the weighted levers or I zirms. 495ic2irpyingthe friction $911638 50, i whichhave heretofore been described; 1 V

' V V 195 1 An ezqmnding mill of the ehemetef;

described, comprising ipper andr llower g platens, each hav ng a flat smooth working 7 iface,{the,pletensrbemg'spaeed to rece ve a tube and lit-s mandrel; between the same;

.meansfor reciprocating andigniding one of fthe platensin relatlon totheother aorown' means [for adjusting the ,stationaifyflplaten,

land weighted balancin means" for su'stziim ,Eiilq the movable platen ian d'roll in place .relativettoleech other andithe .crownplate;

plate above thefmoveble blatenQarollfibie-Y @t-Weenthe .crown vplate and movable platen,

described, comprising V a; .ffmm-e :hzwing' an open mouth, elowen table atithelmonthp an upper .CIiOWIizfLt the mouth abovdthetzible, i

letter. astetionaty platen on thesupbopt, a inemible iplaten .;speced t zom the stationary b. plat-ease friction" or'rbearinjgiroll 'betweenthe g moyeblejpleten vand "the: crown plate. reek gl'ea fist on the said; roll toothed lifa-cksfi on .the' I mo ab1ep1eten and :erowniptaterandrenagif ing. the? rack gears mea ns for reciprocating i the? movable. platen} tracks on 'th.e -,:;'cr.ow1j, safety? hangers #011 .thermoveblenpleteniand: able on. eke; and vweifehted vhalianc- 'imec hanismdaetingjon the moveble pl aten j 5 f to. sustain the sjame .and.the -':r.o1l;inpl ace f V relative toeach othervend the ci'owmpl-ate. V 3. Anexpandingmill' either-character de scribed, comprising ailower'platen, an 11 5- per movable platen, plural means movable transversely beneath the lower platen to raise, lower and level the same, a substantially C-shaped frame having a mouth atits open side in which are located the platens, rotatable means rearwardly, of the lower platen for movably supporting the work when introduced betweenthe platens, tracks 011 the upper portion of the frame, and exmovable over the tracks and carrying the upper platen, rolling'means between the'upper portion of the frame and said upper platen.

In testimony whereof I affix mysignature;

GEORGE J. THUST. v

platen, and balancing means for the upper o 

